By the way, just got the HD collection and I had a hard time playing MGS3 before. So I was wondering if there is a video somewhere that shows and explains tips on how to play it properly to get the most out of the game?
I don't know of any one single video, but this playthrough by Chip Cheezum and Ironicus is great. Chip knows the MGS series like the back of his hand and will often talk about obscure trivia about each of the MGS games while he plays through them, on top of explaining the game's mechanics. His LP's of the other entries in the franchise are great as well